/*
 * This file is part of aion-lightning <aion-lightning.org>.
 * 
 * aion-lightning is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * aion-lightning is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with aion-lightning.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.aionengine.gameserver.controllers.observer;

import com.aionengine.gameserver.model.gameobjects.Creature;
import com.aionengine.gameserver.model.gameobjects.player.Player;
import com.aionengine.gameserver.utils.MathUtil;

/**
 * @author xTz
 */
public abstract class GaleCycloneObserver extends ActionObserver {

    private Player player;
    private Creature creature;
    private double oldRange;

    public GaleCycloneObserver(Player player, Creature creature) {
        super(ObserverType.MOVE);
        this.player = player;
        this.creature = creature;
        oldRange = MathUtil.getDistance(player, creature);
    }

    @Override
    public void moved() {
        double newRange = MathUtil.getDistance(player, creature);
        if (creature == null || creature.getLifeStats().isAlreadyDead()) {
            if (player != null) {
                player.getObserveController().removeObserver(this);
            }
            return;
        }
        if (oldRange > 12 && newRange <= 12) {
            onMove();
        }
        oldRange = newRange;
    }

    public abstract void onMove();
}
